TW201610355A - Wavelength conversion member and remote phosphor type light emitting apparatus - Google Patents
Wavelength conversion member and remote phosphor type light emitting apparatus Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
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- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
- F21V3/08—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material comprising photoluminescent substances
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21V31/00—Gas-tight or water-tight arrangements
- F21V31/005—Sealing arrangements therefor
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- F21V7/00—Reflectors for light sources
- F21V7/0008—Reflectors for light sources providing for indirect lighting
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- F21V7/00—Reflectors for light sources
- F21V7/0066—Reflectors for light sources specially adapted to cooperate with point like light sources; specially adapted to cooperate with light sources the shape of which is unspecified
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
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- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
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Abstract
Description
本發明係關於波長轉換部件，其藉磷光體將來自光源的光加以轉換並使經轉換的光有效率地於所欲方向發射，及係關於遠程磷光體型發光裝置，其中波長轉換部件和發光二極體彼此遠程配置。 The present invention relates to a wavelength conversion component that converts light from a light source by a phosphor and emits the converted light efficiently in a desired direction, and relates to a remote phosphor type light-emitting device, wherein the wavelength conversion component and the light-emitting device The polar bodies are remotely configured from each other.
發光二極體(LED)是目前可用之最有效的光源。特別地，白光LED迅速佔據市場成為取代白熱燈、螢光燈、冷陰極螢光燈(CCFL)背光和鹵素燈的下一代光源。作為用以實現白光LED的組態，基於發藍光的二極體(藍光LED)和發射較長波長光的磷光體(其以藍光激發時，發射例如，黃光或綠光較長波長的光)之組合的白光LED已用於實際應用。此外，使用此白光LED的LED照明裝置已用於實際應用。 Light-emitting diodes (LEDs) are the most efficient light sources available today. In particular, white LEDs quickly occupy the market as the next generation of light sources that replace incandescent, fluorescent, cold cathode fluorescent (CCFL) backlights and halogen lamps. As a configuration for realizing white LEDs, based on a blue-emitting diode (blue LED) and a phosphor that emits longer-wavelength light (which emits light of longer wavelengths such as yellow or green light when excited by blue light) A combination of white LEDs has been used in practical applications. In addition, LED lighting devices using this white LED have been used in practical applications.
白光LED所具有的構造中，磷光體置於藍光LED上或接近藍光LED，其處於與樹脂或玻璃混合的狀 態，使得藍光的一部分被轉換成較長波長的光。此系統，其藉實際上與藍光LED結合的磷光體層之波長轉換而得到白光且可被稱為白光LED部件，為白光LED的主流。 In the configuration of white LEDs, the phosphor is placed on or near the blue LED, which is in a state of being mixed with resin or glass. State, such that a portion of the blue light is converted into longer wavelength light. This system, which is actually converted to white light by wavelength conversion of a phosphor layer actually combined with a blue LED, and can be referred to as a white LED component, is the mainstream of white LEDs.
此外，有的發光裝置基於下述系統：其中磷光體位於距離藍光LED數毫米至數十毫米處，使會得來自藍光LED的藍光部分或完全被磷光體進行波長轉換。特別是磷光體的特性會被LED產生的熱降低時，磷光體與LED的遠程配置有效地增近發光裝置的效率及抑制色調之變動。包括磷光體並與LED光源以此方式遠程配置之波長轉變部件被稱為遠程磷光體，且此發光系統被稱為遠程磷光體型系統。當用於照明時，此遠程磷光體型發光系統具有確保改良的整體色勻度的優點，且近年來被研究。 In addition, some illumination devices are based on systems in which the phosphor is located a few millimeters to tens of millimeters from the blue LED such that the blue light from the blue LED is partially or completely wavelength converted by the phosphor. In particular, when the characteristics of the phosphor are lowered by the heat generated by the LED, the remote arrangement of the phosphor and the LED effectively increases the efficiency of the light-emitting device and suppresses variations in color tone. A wavelength conversion component that includes a phosphor and is remotely configured with the LED light source in this manner is referred to as a remote phosphor, and this illumination system is referred to as a remote phosphor type system. When used for illumination, this remote phosphor type illumination system has the advantage of ensuring improved overall color uniformity and has been studied in recent years.
前述遠程磷光體型發光裝置中，通常，藉如下組態得到白光：將具有發射黃光的磷光體粒子、發射綠光的磷光體粒子和，任意地，發射紅光的磷光體粒子分散於樹脂或玻璃中之波長轉換部件作為遠程磷光體放置於，例如，藍光LED前面。用於遠程磷光體之磷光體的例子包括氧化物磷光體(如Y3Al5O12：Ce、(Y,Gd)3(Al,Ga)5O12：Ce、(Y,Gd)3Al5O12：Ce、Tb3Al5O12：Ce和(Sr,Ca,Ba)2SiO4：Eu，特別是石榴石結構化的氧化物磷光體)、矽酸鹽磷光體(如β-SiAlON：Eu)和發紅光的磷光體。發紅光的磷光體的例子包括複合物氟化物磷光體和氮化物磷光體，如CaAlSiN3：Eu2+和 Sr-CaAlSiN3：Eu2+。 In the foregoing remote phosphor type light-emitting device, generally, white light is obtained by arranging phosphor particles having yellow light emission, phosphor particles emitting green light, and, optionally, red light-emitting phosphor particles dispersed in a resin or The wavelength conversion component in the glass is placed as a remote phosphor, for example, in front of a blue LED. Examples of phosphors for remote phosphors include oxide phosphors (e.g., Y 3 Al 5 O 12 :Ce, (Y,Gd) 3 (Al,Ga) 5 O 12 :Ce, (Y,Gd) 3 Al 5 O 12 :Ce, Tb 3 Al 5 O 12 :Ce and (Sr,Ca,Ba) 2 SiO 4 :Eu, especially garnet structured oxide phosphor), citrate phosphor (eg β-) SiAlON: Eu) and a red-emitting phosphor. Examples of red-emitting phosphors include complex fluoride phosphors and nitride phosphors such as CaAlSiN 3 :Eu 2+ and Sr-CaAlSiN 3 :Eu 2+ .
常見發光裝置通常用於在指定方向或指定區域之照明。另一方面，自遠程磷光體中所含的磷光體發射的光係等向(isotropic)；因此，遠程磷光體發射的光的弱點在於發射的光亦進入用於照明的光之指定方向或區域以外的其他方向或區域。在使用遠程磷光體的發光裝置中，關於發光裝置發射的光進入照光的指定方向或區域以外的其他方向或區域方面，試圖藉由將反射部件摻入發光裝置中以改良發射效率(radiation efficiency)。但是，慣用反射部件的效果有其限制。因此，實施上，自遠程磷光體發射的光中，發射進入指定方向或區域以外的其他方向或區域的部分大多耗損而未被利用。 Common lighting devices are typically used for illumination in a specified direction or in a designated area. On the other hand, the light emitted from the phosphor contained in the remote phosphor is isotropic; therefore, the weak point of the light emitted by the remote phosphor is that the emitted light also enters a specified direction or region of light for illumination. Other directions or areas. In a light-emitting device using a remote phosphor, in view of the fact that light emitted by the light-emitting device enters a direction or region other than the specified direction or region of illumination, an attempt is made to improve the radiation efficiency by incorporating the reflective member into the light-emitting device. . However, the effect of the conventional reflecting member is limited. Therefore, in practice, among the light emitted from the remote phosphor, portions that are emitted into other directions or regions other than the specified direction or region are often worn out and are not utilized.
在照明器中，發射的光朝向照明器的正面、側面和背面之部分的比例、散佈方式和色度為設計照明空間的重要因素。發光裝置中能夠將各方向的光量分佈和色度分佈列入考慮之設計，以符合待照明空間的設計基礎要求，此非常見者；因此，照明空間之設計有限制。 In the illuminator, the proportion, the manner of dispersion, and the chromaticity of the emitted light toward the front, side, and back portions of the illuminator are important factors in designing the lighting space. In the illuminating device, it is possible to take the light quantity distribution and the chromaticity distribution in each direction into consideration to meet the design basic requirements of the space to be illuminated, which is very common; therefore, the design of the lighting space is limited.
專利文件1：JP-A 2011-256371 Patent Document 1: JP-A 2011-256371
本發明之目的係提出波長轉換部件，其藉磷光體將來自光源的光加以轉換並有效率地以所欲方向發射 經轉換的光，特別地，波長轉換部件適用於遠程磷光體型發光裝置，及提出遠程磷光體型發光裝置，其可以無損耗且有效率地利用自波長轉換部件的磷光體所發射的光中所欲發射方向以外的方向所發出的光。此外，本發明的另一目的係提出波長轉換部件，其在任意方向之照光強度分佈和色度方面的自由度高，及提出遠程磷光體型發光裝置，其在設計照明空間中提供高自由度。 The object of the present invention is to propose a wavelength conversion component that converts light from a light source by phosphor and efficiently emits in a desired direction The converted light, in particular, the wavelength converting member is suitable for a remote phosphor type light emitting device, and a remote phosphor type light emitting device is proposed which can utilize light emitted from a phosphor of a wavelength converting member without loss and efficiency Light emitted in directions other than the direction of emission. Further, another object of the present invention is to provide a wavelength conversion member which has a high degree of freedom in illumination intensity distribution and chromaticity in an arbitrary direction, and proposes a remote phosphor type light-emitting device which provides a high degree of freedom in designing an illumination space.
本發明者研究含有磷光體的波長轉換部件，其吸收具有預定波長的光，轉換光的波長並發射具有經轉換波長之所得的光，及研究使用此波長轉換部件之遠程磷光體型發光裝置。研究結果發現，在含有磷光體的波長轉換部件中，當激發光照射在磷光體上時，波長轉換部件以等向方式發射波長經轉換的光，即，朝向激發光入射側、反面側和側面側，且激發光的一部分穿透波長轉換部件。在使用此波長轉換部件的發光裝置中，發光裝置之所欲發射方向以外的其他方向發射的光的大部分對於所欲光射線的貢獻率低並因此而以光能浪費掉。關注這些點，本發明者認為如果因此而浪費的光能能夠被有效利用，則可實現具有增進的照度之發光裝置。 The inventors studied a wavelength conversion member containing a phosphor which absorbs light having a predetermined wavelength, converts the wavelength of light and emits light having a converted wavelength, and studies a remote phosphor type light-emitting device using the wavelength conversion member. As a result of the research, it has been found that in the wavelength conversion member containing the phosphor, when the excitation light is irradiated on the phosphor, the wavelength conversion member emits the wavelength-converted light in an isotropic manner, that is, toward the incident side, the opposite side, and the side of the excitation light. Side, and a portion of the excitation light penetrates the wavelength conversion component. In the light-emitting device using the wavelength conversion member, most of the light emitted in directions other than the desired emission direction of the light-emitting device has a low contribution rate to the desired light beam and thus is wasted by the light energy. With these points in mind, the inventors believe that if the light energy thus wasted can be effectively utilized, a light-emitting device having improved illumination can be realized.
以此考量為基礎，本發明者廣泛地密集研究以符合上述要求。結果，本發明者發現，藉由模製透明或半透明聚合物材料和磷光體之混合物而形成發光部件，及當將來自磷光體的光朝向發光部件側反射之反射層層合於發光部件表面的部分之上以得到波長轉換部件時(和，特 別地，當波長轉換部件用於遠程磷光體型發光裝置時)時，在波長轉換部件中，所欲光發射方向以外的其他方向之自磷光體發射的光可被導入所欲光發射方向，藉此可以有效地增進在所欲光發射方向中的照度。此外，亦發現，當反射層僅層合於發光部件表面的指定部分上時，自發光裝置發射的光不僅朝向前面側，亦廣泛地朝向背面和側面側，其並控制照度和色度，經由對各個光發射方向之照度和色度控制，待照射空間可被多樣化照明，並可提供先前技術無法提供之新穎的發光裝置。基於這些發現，完成本發明。 Based on this consideration, the inventors extensively intensively studied to meet the above requirements. As a result, the inventors have found that a light-emitting member is formed by molding a mixture of a transparent or translucent polymer material and a phosphor, and a reflective layer that reflects light from the phosphor toward the side of the light-emitting member is laminated on the surface of the light-emitting member. Above the part to get the wavelength conversion component (and, Alternatively, when the wavelength conversion member is used in a remote phosphor type light-emitting device, light emitted from the phosphor in a direction other than the desired light emission direction may be introduced into the desired light emission direction in the wavelength conversion member. This can effectively enhance the illuminance in the desired light emission direction. In addition, it has been found that when the reflective layer is only laminated on a designated portion of the surface of the light-emitting member, the light emitted from the light-emitting device not only faces the front side but also broadly faces the back side and the side surface, and controls the illuminance and chromaticity, via For illumination and chromaticity control of the respective light emission directions, the space to be illuminated can be diversified and can provide novel illumination devices that were not provided by prior art. Based on these findings, the present invention has been completed.
因此，本發明提出以下的波長轉換部件和遠程磷光體型發光裝置。 Accordingly, the present invention proposes the following wavelength conversion members and remote phosphor type light-emitting devices.
一特徵中，本發明提出波長轉換部件，其包含發光部件，其為包含透明或半透明聚合物材料和磷光體之混合物的模製物件；和反射層，其層合於發光部件表面的一部分上，該反射層用以將自磷光體發射的光朝向發光部件側反射。 In one feature, the present invention provides a wavelength converting member comprising a light emitting member which is a molded article comprising a mixture of a transparent or translucent polymeric material and a phosphor; and a reflective layer laminated to a portion of the surface of the light emitting member The reflective layer is for reflecting light emitted from the phosphor toward the side of the light emitting member.
較佳具體實施例中，該波長轉換部件包含至少兩層由不同的磷光體彼此混合的層。 In a preferred embodiment, the wavelength converting component comprises at least two layers of different phosphors mixed with one another.
較佳地，該反射層在發光部件側上具有鏡面。 Preferably, the reflective layer has a mirror surface on the side of the light emitting member.
亦較佳地，該聚合物材料係選自熱塑性樹脂和熱固性樹脂中之至少一種樹脂。 Also preferably, the polymer material is selected from at least one of a thermoplastic resin and a thermosetting resin.
亦較佳地，該磷光體吸收波長最高至470nm 的光並發射可見光。 Also preferably, the phosphor absorbs wavelengths up to 470 nm The light emits visible light.
其他較佳的具體實施例中，基於發光部件的一個發光方向係前面方向，反射層層合於發光部件背面表面的一部分或全部和/或發光部件的側面表面的一部分或全部之上。 In other preferred embodiments, the reflective layer is laminated on a portion or all of the back surface of the light emitting member and/or a portion or all of the side surface of the light emitting member based on a front direction of the light emitting member.
另一方面，本發明提出遠程磷光體型發光裝置，其包含一特徵之波長轉換部件、和發光二極體，其中波長轉換部件和發光二極體以氣體層或真空層介於其間地彼此遠程配置，且來自發光二極體的光經由未層合有反射層的表面進入波長轉換部件。 In another aspect, the present invention provides a remote phosphor type light-emitting device comprising a characteristic wavelength conversion member and a light-emitting diode, wherein the wavelength conversion member and the light-emitting diode are remotely disposed with each other with a gas layer or a vacuum layer interposed therebetween And light from the light-emitting diode enters the wavelength conversion member via the surface on which the reflective layer is not laminated.
較佳具體實施例中，該磷光體吸收具有最高至470nm之波長的光並發射可見光。較佳地，發光二極體發出最高至470nm的光。 In a preferred embodiment, the phosphor absorbs light having a wavelength of up to 470 nm and emits visible light. Preferably, the light emitting diode emits light up to 470 nm.
其他較佳具體實施例中，基於發光部件的一個發光方向係前面方向，反射層層合於發光部件背面表面的一部分或全部和/或發光部件側面表面的一部分或全部之上。 In other preferred embodiments, the reflective layer is laminated on a portion or all of the back surface of the light emitting member and/or a portion or all of the side surface of the light emitting member based on a front direction of the light emitting member.
在藉磷光體將來自光源的光加以轉換並以所欲方向發射經轉換的光之波長轉換部件中，自波長轉換部件中之磷光體發射的光，其在所欲發射方向以外的其他方向中發射，可以有效地被利用且無耗損。此外，當此波長轉換部件用於遠程磷光體型發光裝置時，在波長轉換部件 中之自磷光體發射的光(其會在發光裝置所欲發射方向以外的其他方向上傳播)可被導至所欲發射方向，藉此，可以有效地增進在所欲發射方向中的照度。 In a wavelength conversion member that converts light from a light source by a phosphor and emits the converted light in a desired direction, the light emitted from the phosphor in the wavelength conversion member is in a direction other than the desired emission direction. The launch can be effectively utilized without loss. In addition, when the wavelength conversion component is used in a remote phosphor type light-emitting device, the wavelength conversion component The light emitted from the phosphor (which propagates in a direction other than the direction in which the illuminating device is intended to be emitted) can be guided to the desired direction of emission, whereby the illuminance in the desired direction of emission can be effectively enhanced.
此外，可提出波長轉換部件和遠程磷光體型發光裝置，其在任意方向之照光強度分佈和色度方面的自由度高，且其在設計照明空間中提供高自由度。 Further, a wavelength conversion member and a remote phosphor type light-emitting device which have a high degree of freedom in illumination intensity distribution and chromaticity in any direction and which provide a high degree of freedom in designing an illumination space can be proposed.
1‧‧‧遠程磷光體型發光裝置 1‧‧‧Remote phosphor type illuminating device
11‧‧‧波長轉換部件 11‧‧‧wavelength conversion components
12‧‧‧發光部件 12‧‧‧Lighting parts
13‧‧‧反射層 13‧‧‧reflective layer
21‧‧‧發光二極體 21‧‧‧Lighting diode
22‧‧‧基板 22‧‧‧Substrate
31‧‧‧透明覆蓋物 31‧‧‧Transparent covering
12a‧‧‧第一層 12a‧‧‧ first floor
12b‧‧‧第二層 12b‧‧‧ second floor
13a‧‧‧無反射層的區域 13a‧‧‧ areas without reflection layer
圖1A和1B分別是本發明之具有波長轉換部件之遠程磷光體型發光裝置的第一具體實施例的例子之透視圖和截面圖。 1A and 1B are respectively a perspective view and a cross-sectional view showing an example of a first embodiment of a remote phosphor type light-emitting device having a wavelength conversion member of the present invention.
圖2是本發明之具有波長轉換部件的遠程磷光體型發光裝置的第二實施例的例子之截面圖。 Fig. 2 is a cross-sectional view showing an example of a second embodiment of a remote phosphor type light-emitting device having a wavelength conversion member of the present invention.
圖3A和3B分別是本發明之具有波長轉換部件之遠程磷光體型發光裝置的第三具體實施例的例子之平面圖和截面圖。 3A and 3B are a plan view and a cross-sectional view, respectively, showing an example of a third embodiment of a remote phosphor type light-emitting device having a wavelength conversion member of the present invention.
圖4A和4B分別是本發明之具有波長轉換部件之遠程磷光體型發光裝置的第四具體實施例的例子之平面圖和截面圖。 4A and 4B are a plan view and a cross-sectional view, respectively, showing an example of a fourth embodiment of a remote phosphor type light-emitting device having a wavelength conversion member of the present invention.
以下將詳細描述根據本發明之波長轉換部件。 The wavelength conversion member according to the present invention will be described in detail below.
根據本發明之波長轉換部件包括發光部件 (發光部分)，其為包含聚合物材料和磷光體之混合物的模製物件，和反射層，其層合於發光部件表面的一部分上。在用於遠程磷光體型發光裝置的情況中，根據本發明之波長轉換部件有時被稱為遠程磷光體。 The wavelength conversion member according to the present invention includes a light-emitting component (Light emitting portion) which is a molded article comprising a mixture of a polymer material and a phosphor, and a reflective layer laminated on a portion of the surface of the light emitting member. In the case of a remote phosphor type light-emitting device, the wavelength conversion member according to the present invention is sometimes referred to as a remote phosphor.
可以使用透明或半透明聚合物材料作為聚合物材料，特別佳者為透明聚合物材料。橡膠、彈性體和樹脂可作為聚合物材料，但是，通常，較佳地使用至少一種選自熱塑性樹脂和熱固性樹脂之樹脂。熱塑性樹脂的例子包括聚乙烯、聚丙烯、聚氯乙烯、聚苯乙烯、聚乙酸乙烯酯、氟樹脂、鐵弗龍(註冊商標)、ABS樹脂、AS樹脂、丙烯酸系樹脂、聚醯胺、聚縮醛、聚碳酸酯、經改質的聚苯醚、聚對酞酸丁二酯、聚對酞酸乙二酯、環狀聚烯烴、聚苯硫醚、聚碸、和熱塑性聚醯亞胺。另一方面、熱固性樹脂的例子包括胺基樹脂、酚樹脂、環氧樹脂、三聚氰胺樹脂、脲樹脂、不飽和的聚酯樹脂、醇酸樹脂、聚胺甲酸酯、和熱固性聚醯亞胺。 Transparent or translucent polymeric materials can be used as the polymeric material, particularly preferably transparent polymeric materials. The rubber, the elastomer and the resin can be used as the polymer material, but usually, at least one resin selected from the group consisting of a thermoplastic resin and a thermosetting resin is preferably used. Examples of the thermoplastic resin include polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyvinyl acetate, fluororesin, Teflon (registered trademark), ABS resin, AS resin, acrylic resin, polyamide, poly Acetal, polycarbonate, modified polyphenylene ether, polybutylene terephthalate, polyethylene terephthalate, cyclic polyolefin, polyphenylene sulfide, polyfluorene, and thermoplastic polyimine . On the other hand, examples of the thermosetting resin include an amine-based resin, a phenol resin, an epoxy resin, a melamine resin, a urea resin, an unsaturated polyester resin, an alkyd resin, a polyurethane, and a thermosetting polyimide.
該磷光體係吸收具有預定波長的光、轉換光的波長和發射具有經轉換的波長之所得的光之磷光體。該磷光體可藉已知方法製造，或可以市售者使用。磷光體可以粒或粉形式使用。至於磷光體的粒子直徑、粒子直徑D50(對應於粒子尺寸分佈中之50%的累積體積)較佳地至少1.0微米，特別是至少1.5微米且較佳地最高至100微米，特別是最高至40微米。此外，粒子直徑D90(對應於粒子尺寸分佈中之90%的累積體積)較佳地最高至 200微米，特別是最高至100微米。注意到本發明中之磷光體的粒子直徑，可為，例如，藉由將磷光體分散於氣流或水流中並藉雷射繞射散射法測定磷光體的粒子直徑而得的粒子直徑值。 The phosphorescent system absorbs light having a predetermined wavelength, a wavelength of converted light, and a phosphor that emits light having a converted wavelength. The phosphor can be produced by a known method or can be used by a commercial person. The phosphor can be used in the form of granules or powder. As for the particle diameter of the phosphor, the particle diameter D50 (corresponding to a cumulative volume of 50% of the particle size distribution) is preferably at least 1.0 μm, in particular at least 1.5 μm and preferably up to 100 μm, in particular up to 40 Micron. Further, the particle diameter D90 (corresponding to a cumulative volume of 90% of the particle size distribution) is preferably up to 200 microns, especially up to 100 microns. Note that the particle diameter of the phosphor in the present invention may be, for example, a particle diameter value obtained by dispersing a phosphor in a gas stream or a water stream and measuring the particle diameter of the phosphor by a laser diffraction scattering method.
作為磷光體，可使用單一磷光體或複數磷光體可以混合狀態使用。此外，本發明中，發光部件的構造可包括至少兩層由不同的磷光體彼此混合的層。此情況中，單一磷光體可用於至少兩層中之各者，或複數磷光體可以混合狀態用於至少兩層的各者中。 As the phosphor, a single phosphor or a plurality of phosphors can be used in a mixed state. Further, in the present invention, the configuration of the light-emitting member may include at least two layers which are mixed with each other by different phosphors. In this case, a single phosphor may be used for each of at least two layers, or a plurality of phosphors may be used in a mixed state for each of at least two layers.
較佳地，磷光體吸收波長最高至470nm，特別是400mm至470nm的波長，之藍光並發射可見光。此磷光體的例子包括氧化物磷光體(如Y3Al5O12：Ce、(Y,Gd)3(Al,Ga)5O12：Ce、(Y,Gd)3Al5O12：Ce、Tb3Al5O12：Ce和(Sr,Ca,Ba)2SiO4：Eu，特別是石榴石結構化的氧化物磷光體)、矽酸鹽磷光體(如β-SiAlON：Eu)和發紅光的磷光體。發紅光的磷光體的例子包括複合物氟化物磷光體和氮化物磷光體，如CaAlSiN3：Eu2+和Sr-CaAlSiN3：Eu2+。 Preferably, the phosphor absorbs light having a wavelength of up to 470 nm, particularly from 400 mm to 470 nm, which emits visible light. Examples of such a phosphor include an oxide phosphor (e.g., Y 3 Al 5 O 12 :Ce, (Y,Gd) 3 (Al,Ga) 5 O 12 :Ce, (Y,Gd) 3 Al 5 O 12 :Ce , Tb 3 Al 5 O 12 :Ce and (Sr,Ca,Ba) 2 SiO 4 :Eu, especially garnet structured oxide phosphor), citrate phosphor (eg β-SiAlON:Eu) and A red-emitting phosphor. Examples of red-emitting phosphors include complex fluoride phosphors and nitride phosphors such as CaAlSiN 3 :Eu 2+ and Sr-CaAlSiN 3 :Eu 2+ .
除了聚合物材料和磷光體以外，發光部件可含有不會損及本發明之目的或損及波長轉換部件所欲功用的一或多種添加劑。添加劑的例子包括用以加速光之散射的光散射劑。一或多種添加劑在發光部件中之含量通常最高至10重量%，特別在0.01重量%至5重量%的範圍內，此以發光部件重量計。 In addition to the polymeric material and the phosphor, the luminescent component can contain one or more additives that do not detract from the objectives of the present invention or detract from the desired function of the wavelength converting component. Examples of the additive include a light scattering agent to accelerate scattering of light. The content of the one or more additives in the illuminating component is generally up to 10% by weight, in particular in the range from 0.01% by weight to 5% by weight, based on the weight of the illuminating component.
在除了聚合物材料和磷光體以外，沒有添加劑用於發光部件的情況中，磷光體在發光部件中之含量較佳地為0.1重量%至50重量%，餘者為聚合物材料，且在除了聚合物材料和磷光體以外，一或多種添加劑用於發光部件的情況中，餘者為聚合物材料和一或多種添加劑總含量。 In the case where there is no additive for the light-emitting member other than the polymer material and the phosphor, the content of the phosphor in the light-emitting member is preferably from 0.1% by weight to 50% by weight, the remainder being a polymer material, and in addition to In addition to the polymeric material and the phosphor, one or more additives are used in the case of the light-emitting component, the remainder being the total content of the polymeric material and one or more additives.
藉由混合聚合物材料、磷光體和，任意地，一或多種添加劑及模製所得混合物可得到發光部件。模製中，可施用已知的模製法(如加壓模製、壓出模製或射出模製)，藉此，混合物模製成任何所欲形狀(如膜或片形)和所欲尺寸。 The luminescent member can be obtained by mixing a polymer material, a phosphor, and optionally, one or more additives, and molding the resulting mixture. In molding, a known molding method (e.g., press molding, extrusion molding, or injection molding) can be applied, whereby the mixture is molded into any desired shape (e.g., film or sheet shape) and desired size. .
可以根據波長轉換部件所欲用途，適當地選擇發光部件的形狀和尺寸。但是，注意到，選擇的形狀和尺寸得以形成下文所述的反射層。特別地，考慮波長轉換部件與一或多個發光二極體併用作為發光裝置，希望發光部件所具有的厚度可以在使用發光部件形成波長轉換部件之後，波長轉換部件本身維持固定形狀。未特別限制發光部件的厚度，且通常在0.1mm至6mm的範圍內。 The shape and size of the light-emitting member can be appropriately selected depending on the intended use of the wavelength conversion member. However, it is noted that the shape and size of the selection are such that the reflective layer described below is formed. In particular, it is considered that the wavelength converting member is used in combination with one or more light emitting diodes as a light emitting device, and it is desirable that the light emitting member has a thickness that can maintain a fixed shape after the wavelength converting member is formed using the light emitting member. The thickness of the light-emitting member is not particularly limited, and is usually in the range of 0.1 mm to 6 mm.
反射層(自磷光體發射的光藉此反射朝向發光部件側)層合於發光部件表面的一部分上。在根據本發明之波長轉換部件中，發光部件表面包括沒有反射層層合的區域。令用於磷光體的激發光經由無反射層層合的區域的一部分或全數進入發光部件。此外，自磷光體發射的光經由無反射層層合的區域的一部分或全數發射至波長轉換 部件的外側。 The reflective layer (the light emitted from the phosphor is thereby reflected toward the side of the light emitting member) is laminated on a portion of the surface of the light emitting member. In the wavelength conversion member according to the present invention, the surface of the light-emitting member includes a region where no reflective layer is laminated. The excitation light for the phosphor is allowed to enter the light-emitting member through a part or all of the region where the non-reflective layer is laminated. In addition, light emitted from the phosphor is partially or fully emitted to a wavelength conversion via a region where the non-reflective layer is laminated The outside of the part.
根據本發明之波長轉換部件中，基於來自發光部件的光的一個任意方向為前面方向，此反射層較佳地位於發光部件背面表面的一部分或全部之上。此情況中，當反射層位於背面表面的全部之上時，朝波長轉換部件背面發射的光可被阻擋。當反射層位於背面表面的一部分之上時(當背面表面的一部分成為反射層未層合的區域時)，亦朝向波長轉換部件背面發光。注意到前述自發光部件發光之一個任意發光方向通常對應於激發光的入射側。 In the wavelength conversion member according to the present invention, the reflection layer is preferably located on a part or all of the back surface of the light-emitting member in an arbitrary direction based on the light from the light-emitting member. In this case, when the reflective layer is located over all of the back surface, light emitted toward the back side of the wavelength conversion member can be blocked. When the reflective layer is located over a portion of the back surface (when a portion of the back surface becomes a region where the reflective layer is not laminated), it also emits light toward the back side of the wavelength conversion member. It is noted that an arbitrary light-emitting direction of the aforementioned self-illuminating member illumination generally corresponds to the incident side of the excitation light.
在根據本發明之波長轉換部件中，基於來自發光部件的光的一個任意方向為前面方向，此反射層較佳地位於發光部件側面表面的一部分或全部之上。此情況中，當反射層位於側面表面的全部之上時，朝波長轉換部件側面發射的光可被阻擋。當反射層位於側面表面的一部分之上時(當側面表面的一部分成為反射層未層合的區域時)，亦朝向波長轉換部件側面發光。 In the wavelength conversion member according to the present invention, the reflection layer is preferably located on a part or all of the side surface of the light-emitting member based on an arbitrary direction of light from the light-emitting member. In this case, when the reflective layer is located over all of the side surfaces, light emitted toward the side of the wavelength conversion member can be blocked. When the reflective layer is located on a portion of the side surface (when a portion of the side surface becomes a region where the reflective layer is not laminated), it also emits light toward the side of the wavelength conversion member.
波長轉換部件的厚度為發光部件和反射層的總厚度。在反射層僅位於前述發光部件的背面表面上的情況中，波長轉換部件的厚度為前述發光部件的厚度和前述反射層厚度的和。在根據本發明之波長轉換部件中，反射層亦可以施用於發光部件的前述一個任意方向側的表面的一部分之上。此情況中，波長轉換部件的厚度是前述發光部件的厚度和前述反射層兩倍厚度的和。 The thickness of the wavelength converting member is the total thickness of the light emitting member and the reflective layer. In the case where the reflective layer is located only on the back surface of the aforementioned light-emitting member, the thickness of the wavelength-converting member is the sum of the thickness of the aforementioned light-emitting member and the thickness of the aforementioned reflective layer. In the wavelength conversion member according to the present invention, the reflective layer may also be applied over a portion of the surface of the aforementioned one of the arbitrary direction sides of the light emitting member. In this case, the thickness of the wavelength converting member is the sum of the thickness of the foregoing light emitting member and the double thickness of the aforementioned reflective layer.
反射層由自磷光體發出的光會朝向發光部件側反射之材料形成便已足夠，更佳地，使激發光可反射朝發光部件的材料。特別地，在發光部件側上的反射層表面較佳係鏡面。為使發光部件上的反射層表面為鏡面，可施用已知鏡面形成法，如無電鍍敷法(如銀鏡反應)、金屬蒸鍍法和反射膜材料施用法。其上形成反射層之發光部件的表面可經聚矽氧樹脂(如，經丙烯酸系改質的聚矽氧樹脂)(其作為黏著增進材料)塗覆，以增進反射層的黏著性。進行塗覆時，可施用聚矽氧樹脂溶液。若非待形成反射層之表面區域經遮蔽帶遮蔽，則反射層僅形成於所欲表面部分。此外，一旦形成反射層之後，可藉蝕刻或拋光移除一部分的反射層。此外，在根據本發明之波長轉換部件中，可以進一步在反射層上施以保護層。 It is sufficient that the reflective layer is formed of a material that is emitted from the phosphor toward the side of the light-emitting member, and more preferably, the excitation light can reflect the material toward the light-emitting member. In particular, the surface of the reflective layer on the side of the light-emitting member is preferably mirror-finished. In order to make the surface of the reflective layer on the light-emitting member mirror-finished, known mirror formation methods such as electroless plating (e.g., silver mirror reaction), metal evaporation, and reflective film material application may be applied. The surface of the light-emitting member on which the reflective layer is formed may be coated with a polyoxynoxy resin (e.g., acrylic modified polyoxynoxy resin) as an adhesion promoting material to enhance the adhesion of the reflective layer. When the coating is carried out, a polyoxyxylene resin solution can be applied. If the surface area of the reflective layer to be formed is shielded by the masking strip, the reflective layer is formed only on the desired surface portion. Further, once the reflective layer is formed, a portion of the reflective layer may be removed by etching or polishing. Further, in the wavelength conversion member according to the present invention, a protective layer may be further applied to the reflective layer.
較佳地使用銀鏡反應作為在發光部件上形成反射層的方法，此因其易在形狀複雜的發光部件表面上形成鏡面之故。在施用銀鏡反應的情況中，例如，硝酸銀的氨水溶液、氫氧化鈉的水溶液和葡萄糖水溶液之混合水溶液與發光部件接觸，藉此可在發光部件側上的表面上形成具有鏡面的銀鏡。 It is preferable to use a silver mirror reaction as a method of forming a reflective layer on a light-emitting member because it is easy to form a mirror surface on the surface of a light-emitting member having a complicated shape. In the case of applying the silver mirror reaction, for example, a mixed aqueous solution of an aqueous solution of silver nitrate, an aqueous solution of sodium hydroxide, and an aqueous glucose solution is brought into contact with the light-emitting member, whereby a silver mirror having a mirror surface can be formed on the surface on the side of the light-emitting member.
以下將詳細描述根據本發明之遠程磷光體型發光裝置。 The remote phosphor type light-emitting device according to the present invention will be described in detail below.
根據本發明之遠程磷光體型發光裝置包括含磷光體的波長轉換部件(其吸收預定波長的光，轉換光的波長及發出具有經轉換波長的所得光)和發光二極體，其 中波長轉換部件和發光二極體以氣體層介於其間地彼此遠程配置。在遠程磷光體型發光裝置中，波長轉換部件和發光二極體的配置使得自發光二極體發出的激發光入射於波長轉換部件上。 A remote phosphor type light-emitting device according to the present invention includes a phosphor-containing wavelength conversion member that absorbs light of a predetermined wavelength, converts a wavelength of light and emits light having a converted wavelength, and a light-emitting diode, The medium wavelength conversion member and the light emitting diode are disposed remotely from each other with the gas layer interposed therebetween. In the remote phosphor type light-emitting device, the wavelength conversion member and the light-emitting diode are disposed such that the excitation light emitted from the light-emitting diode is incident on the wavelength conversion member.
在根據本發明之遠程磷光體型發光裝置中，較佳地使用前述波長轉換部件，該波長轉換部件包括發光部件(其為含有聚合物材料和磷光體之混合物的模製物件)和層合於發光部件表面的一部分之上的反射層。波長轉換部件和發光二極體之配置使得來自發光二極體的光經由波長轉換部件之未層合有反射層的表面進入波長轉換部件。 In the remote phosphor type light-emitting device according to the present invention, it is preferable to use the aforementioned wavelength conversion member including a light-emitting member which is a molded article containing a mixture of a polymer material and a phosphor and laminated to light a reflective layer over a portion of the surface of the component. The wavelength conversion member and the light emitting diode are disposed such that light from the light emitting diode enters the wavelength conversion member via a surface of the wavelength conversion member that is not laminated with the reflective layer.
根據磷光體的吸收波長，適當地選擇用於發出激發光之發光二極體。在磷光體(其吸收波長最高至470nm的光而發光)用於波長轉換部件的情況中，較佳地使用所發出的光的中心波長最高至470nm之發光二極體，特別是中心波長為440nm至470nm之發藍光的藍光發光二極體。 The light-emitting diode for emitting excitation light is appropriately selected in accordance with the absorption wavelength of the phosphor. In the case where a phosphor (which absorbs light having a wavelength of up to 470 nm and emits light) is used for the wavelength conversion member, it is preferable to use a light-emitting diode having a center wavelength of light emitted up to 470 nm, particularly a center wavelength of 440 nm. Blue light emitting diode to blue light of 470 nm.
已知之遠程磷光體型發光裝置的組態可用於非波長轉換部件和發光二極體以外的遠程磷光體型發光裝置的其他組態。 The configuration of known remote phosphor type illumination devices can be used for other configurations of non-wavelength conversion components and remote phosphor type illumination devices other than light emitting diodes.
在根據本發明之遠程磷光體型發光裝置中，以發光裝置的一個發光方向係前面方向時，較佳為反射層施於波長轉換部件的發光部件背面表面的一部分或全部之上。此情況中，當反射層施於背面表面的全部之上時，朝 發光裝置背面發射的光可被阻擋。另一方面，當反射層位於背面表面的一部分之上時(當背面表面的一部分成為反射層未層合的區域時)，亦可朝向發光裝置背面發光。注意到發光裝置的發光方向通常對應於激發光的入射側。 In the remote phosphor type light-emitting device according to the present invention, when one light-emitting direction of the light-emitting device is in the front direction, it is preferable that the reflective layer is applied to a part or all of the back surface of the light-emitting member of the wavelength conversion member. In this case, when the reflective layer is applied over all of the back surface, Light emitted from the back of the illuminator can be blocked. On the other hand, when the reflective layer is located on a portion of the back surface (when a portion of the back surface becomes a region where the reflective layer is not laminated), it is also possible to emit light toward the back surface of the light-emitting device. It is noted that the illumination direction of the illumination device generally corresponds to the incident side of the excitation light.
在根據本發明之遠程磷光體型發光裝置中，以發光裝置的發光方向為前面方向，此反射層較佳地位於波長轉換裝置的發光部件側面表面的一部分或全部之上。此情況中，當反射層位於側面表面的全部之上時，朝發光裝置側面發射的光可被阻擋。另一方面，當反射層位於側面表面的一部分之上時(當側面表面的一部分成為反射層未層合的區域時)，亦可朝向發光裝置的側面發光。 In the remote phosphor type light-emitting device according to the present invention, the light-emitting direction of the light-emitting device is in the front direction, and the reflective layer is preferably located on a part or all of the side surface of the light-emitting member of the wavelength conversion device. In this case, when the reflective layer is located over all of the side surfaces, light emitted toward the side of the light emitting device can be blocked. On the other hand, when the reflective layer is located on a part of the side surface (when a part of the side surface becomes a region where the reflective layer is not laminated), it is also possible to emit light toward the side of the light-emitting device.
在根據本發明之遠程磷光體型發光裝置的波長轉換部件中，反射層亦可施用於發光裝置的光發射方向側表面的一部分之上。 In the wavelength conversion member of the remote phosphor type light-emitting device according to the present invention, the reflective layer may also be applied over a portion of the light-emitting direction side surface of the light-emitting device.
下文將對照特定實例，進一步描述根據本發明之遠程磷光體型發光裝置。 The remote phosphor type light-emitting device according to the present invention will be further described below with reference to specific examples.
圖1A和1B出示實施本發明之第一具體實施例，其對應於遠程磷光體型發光裝置具有根據本發明之波長轉換部件的例子。此遠程磷光體型發光裝置1具有三角稜柱整體形狀及直角的三角形底。波長轉換部件11具有發光部件12和反射層13，其配置於三角稜柱形的斜面部分，不透明的基板22配置於直立表面部分和三角稜柱形的底面部分各者上，透明覆蓋物31被置於三角稜柱形的底表面部分。四個發光二極體21放置在三角稜柱形的直 立表面部分處的基板22上，其發光表面朝向波長轉換部件11。波長轉換部件11的發光部件12朝內，反射層13僅層合於發光部件12的外側表面(發光方向背面上的表面)上。 1A and 1B show a first embodiment of the invention, which corresponds to a remote phosphor type illumination device having an example of a wavelength conversion member in accordance with the present invention. The remote phosphor type light-emitting device 1 has a triangular prism overall shape and a right-angled triangular bottom. The wavelength conversion member 11 has a light-emitting member 12 and a reflection layer 13 which are disposed on a triangular prism-shaped inclined surface portion, and the opaque substrate 22 is disposed on each of the upright surface portion and the triangular prism-shaped bottom surface portion, and the transparent cover 31 is placed The bottom surface portion of the triangular prism. Four light-emitting diodes 21 placed in a triangular prismatic straight On the substrate 22 at the surface portion, the light emitting surface thereof faces the wavelength conversion member 11. The light-emitting member 12 of the wavelength conversion member 11 faces inward, and the reflective layer 13 is laminated only on the outer surface (the surface on the back surface in the light-emitting direction) of the light-emitting member 12.
在此遠程磷光體型發光裝置1的情況中，自發光二極體21發射的激發光到達波長轉換部件11的發光部件12，其中藉發光部件12中所含的磷光體完成波長轉換，且所得之具有經轉換的波長的光等向發射。在經轉換的波長的光中，一部分朝透明覆蓋物31側(發光方向)前進，另一部分朝反射層13側前進。朝反射層13側前進的光的部分被反射層13所反射，被導向透明覆蓋物31側。之後，在發光方向以高亮度發射之前，二部分的光結合。 In the case of the remote phosphor type light-emitting device 1, the excitation light emitted from the light-emitting diode 21 reaches the light-emitting part 12 of the wavelength conversion member 11, wherein the wavelength conversion is performed by the phosphor contained in the light-emitting part 12, and the resulting Light having a converted wavelength is emitted in an isotropic manner. Of the light of the converted wavelength, a part advances toward the transparent cover 31 side (light emitting direction), and the other part advances toward the reflective layer 13 side. A portion of the light that has proceeded toward the side of the reflective layer 13 is reflected by the reflective layer 13 and guided to the side of the transparent cover 31. Thereafter, the two portions of light combine before the light emitting direction is emitted with high luminance.
圖2出示實施本發明之第二具體實施例，其對應於遠程磷光體型發光裝置具有根據本發明之波長轉換部件的例子。此遠程磷光體型發光裝置1具有似傘的整體形狀。波長轉換部件11具有發光部件12和反射層13，其配置於似傘形狀的較上斜面，截面約成L型的透明基板22配置於似傘形狀的較下部分。發光二極體21(圖2僅出示其中二者)位於基板22上之似傘形狀的較下部分，其發光表面朝向波長轉換部件11。波長轉換部件11的發光部件12朝內，反射層13僅層合於外側表面(相對於發光方向之背面上的表面和側面上的表面)。 2 shows a second embodiment embodying the invention, which corresponds to an example of a remote phosphor type illumination device having a wavelength conversion component in accordance with the present invention. This remote phosphor type light-emitting device 1 has an umbrella-like overall shape. The wavelength conversion member 11 has a light-emitting member 12 and a reflection layer 13 which are disposed on an upper inclined surface of an umbrella shape, and a transparent substrate 22 having an approximately L-shaped cross section is disposed in a lower portion like an umbrella shape. The light-emitting diodes 21 (only two of which are shown in FIG. 2) are located on the lower portion of the substrate 22 in the shape of an umbrella having a light-emitting surface facing the wavelength conversion member 11. The light-emitting member 12 of the wavelength conversion member 11 faces inward, and the reflective layer 13 is laminated only to the outer surface (the surface on the back surface and the surface on the side surface with respect to the light-emitting direction).
在遠程磷光體型發光裝置1的情況中，自發 光二極體21發射的激發光到達波長轉換部件11的發光部件12，其中藉發光部件12中所含的磷光體進行波長轉換，所得之具有經轉換的波長的光等向發射。在經轉換的波長的光中，一部分朝向較低的開放側(發光方向)，而另一部分朝反射層13側前進。朝反射層13側前進的光的部分被反射層13所反射，被導向開放側。之後，在發光方向以高亮度發射之前，二部分的光結合。 In the case of the remote phosphor type light-emitting device 1, spontaneous The excitation light emitted from the photodiode 21 reaches the light-emitting member 12 of the wavelength conversion member 11, wherein the phosphor contained in the light-emitting member 12 is wavelength-converted, and the resulting light having the converted wavelength is emitted in an isotropic manner. Among the converted wavelengths of light, one portion faces the lower open side (light emitting direction) while the other portion advances toward the reflective layer 13 side. A portion of the light that is advanced toward the reflective layer 13 side is reflected by the reflective layer 13 and is guided to the open side. Thereafter, the two portions of light combine before the light emitting direction is emitted with high luminance.
圖3A和3B及圖4A和4B出示實施本發明的第三具體實施例和第四具體實施例，其各自對應於具有根據本發明之波長轉換部件之遠程磷光體型發光裝置的例子。這些遠程磷光體型發光裝置1具有似盤的整體形狀，具有倒梯形截面形狀。波長轉換部件11具有發光部件12和反射層13。波長轉換部件11的上部有五處凹陷。五個各放置於不透光基板22上的發光二極體21被置於此凹陷中，其發光表面朝向波長轉換部件11。波長轉換部件11的反射層13僅層合於發光部件12的上側表面上(發光二極體21埋入的面上)。在反射層13的區域內的四個位置中，提供無反射層的區域13a。在圖3A和3B所示的第三具體實施例中，藉提供單層而形成發光部件12。在圖4A和4B所示的第四具體實施例中，藉提供兩層(即，第一層12a和第二層12b)而形成發光部件12。 3A and 3B and Figs. 4A and 4B show a third embodiment and a fourth embodiment embodying the present invention, each of which corresponds to an example of a remote phosphor type light-emitting device having a wavelength conversion member according to the present invention. These remote phosphor type light-emitting devices 1 have an overall disk-like shape and have an inverted trapezoidal cross-sectional shape. The wavelength conversion member 11 has a light emitting member 12 and a reflective layer 13. The upper portion of the wavelength conversion member 11 has five recesses. Five light-emitting diodes 21 each placed on the opaque substrate 22 are placed in this recess with their light-emitting surfaces facing the wavelength conversion member 11. The reflective layer 13 of the wavelength conversion member 11 is laminated only on the upper surface of the light-emitting member 12 (the surface on which the light-emitting diode 21 is buried). In four positions in the region of the reflective layer 13, a region 13a without a reflective layer is provided. In the third embodiment shown in Figs. 3A and 3B, the light-emitting member 12 is formed by providing a single layer. In the fourth embodiment shown in Figs. 4A and 4B, the light-emitting member 12 is formed by providing two layers (i.e., the first layer 12a and the second layer 12b).
在這些遠程磷光體型發光裝置1的情況中，自發光二極體21發射的激發光到達波長轉換部件11的發光部件12(第一層12a和第二層12b)，於其中藉發光部 件12所含的磷光體(第一層12a和第二層12b)進行波長轉換，所得之具有經轉換的波長的光等向發射。波長經轉換的光一部分朝下側和側面側(主要發光方向)前進，而另一部分朝上側前進。朝反射層13側前進的光被反射層13所反射，被導向下側和側面側。之後，在主要發光方向以高亮度發射之前，二部分的光結合。此外，朝向上側的光部分藉由通過反射層未層合的區域13a而朝上側發射(次要發光方向)。 In the case of these remote phosphor type light-emitting devices 1, the excitation light emitted from the light-emitting diode 21 reaches the light-emitting part 12 (the first layer 12a and the second layer 12b) of the wavelength conversion member 11, in which the light-emitting portion is borrowed The phosphor (the first layer 12a and the second layer 12b) contained in the member 12 is wavelength-converted, and the resulting light having the converted wavelength is emitted in an isotropic manner. The wavelength-converted light is partially advanced toward the lower side and the side surface (main light-emitting direction), and the other portion is advanced toward the upper side. The light that has proceeded toward the side of the reflective layer 13 is reflected by the reflective layer 13 and is guided to the lower side and the side surface side. Thereafter, the two portions of light combine before the main illumination direction is emitted with high luminance. Further, the light portion toward the upper side is emitted toward the upper side by the unlaminated region 13a of the reflective layer (secondary light emitting direction).
在這些遠程磷光體型發光裝置1的情況中，藉由調整反射層未層合的區域13a的比例和位置，發射的光可能不僅朝向下側和側面側(主要發光方向)，而是亦朝向上側(次要發光方向)。據此，光發射時，同時控制照度、對比和發射方向，在主要發光方向和次要發光方向中皆然。特別地，在圖4A和4B所示之第四具體實施例的遠程磷光體型發光裝置1的情況中，藉由在第一層12a和第二層12b中分別使用不同的磷光體，可改變者主要和次要發光方向二者之發射光的顏色和色度。 In the case of these remote phosphor type light-emitting devices 1, by adjusting the ratio and position of the unlaminated regions 13a of the reflective layer, the emitted light may not only face the lower side and the side faces (mainly the light-emitting direction) but also the upper side. (Secondary direction of illumination). Accordingly, at the time of light emission, the illuminance, contrast, and emission direction are simultaneously controlled, both in the main illuminating direction and the secondary illuminating direction. In particular, in the case of the remote phosphor type light-emitting device 1 of the fourth embodiment shown in FIGS. 4A and 4B, by using different phosphors in the first layer 12a and the second layer 12b, respectively, the changer The color and chromaticity of the emitted light of both the primary and secondary illuminating directions.
以下將對照實例和比較例，特定地描述本發明，但本發明不限於以下實例。 The invention will be specifically described below with reference to examples and comparative examples, but the invention is not limited to the following examples.
9,800g未經改質的聚丙烯(比重0.91)、200g YAG：Ce3+磷光體(平均粒子直徑18.0微米)和100克矽石粉末(平均粒子直徑5.5微米)在捏和機中混合，得到含磷光體的樹脂粒1。此外，9,000g未經改質的聚丙烯(比重0.91)和1,000g KSF磷光體(K2SiF6：Mn，平均粒子直徑21.0微米)在捏和機中混合，得到含磷光體的粒子2。 9,800 g of unmodified polypropylene (specific gravity 0.91), 200 g of YAG:Ce 3+ phosphor (average particle diameter of 18.0 μm) and 100 g of vermiculite powder (average particle diameter of 5.5 μm) were mixed in a kneader to obtain Resin particle 1 containing phosphor. Further, 9,000 g of unmodified polypropylene (specific gravity: 0.91) and 1,000 g of KSF phosphor (K 2 SiF 6 : Mn, average particle diameter of 21.0 μm) were mixed in a kneader to obtain phosphor-containing particles 2.
含磷光體的粒子1和含磷光體的粒子2進行二色壓出，小心以免空氣進入層間的介面，之後藉壓出模製，模製成似半球蓋形，其具有2mm的厚度和300mm的直徑，以得到由兩層所組成的發光部件。藉此而得的發光部件的似半球蓋形中，分別於外層包括YAG：Ce3+磷光體和內層包括KSF磷光體。 The phosphor-containing particles 1 and the phosphor-containing particles 2 are subjected to two-color extrusion, taking care to prevent air from entering the interlayer interface, and then molding by molding, which is molded into a hemispherical cap shape having a thickness of 2 mm and a thickness of 300 mm. Diameter to obtain a light-emitting component composed of two layers. In the hemispherical cap shape of the light-emitting member thus obtained, the YAG:Ce 3+ phosphor and the inner layer respectively include the KSF phosphor in the outer layer.
之後，遮蔽帶僅黏著於半球蓋形發光部件的內半球表面的全區域，此經遮蔽帶遮蔽的發光元件浸在經丙烯酸系改質的聚矽氧樹脂於有機溶劑中之溶液中。以此方式，經丙烯酸系改質的聚矽氧樹脂係塗覆於發光部件之其上未黏著遮蔽帶的部分(半球蓋形發光部件的外半球表面和圓環形底表面)作為黏著增進材料。 Thereafter, the masking tape adheres only to the entire area of the inner hemispherical surface of the hemispherical cap-shaped light-emitting member, and the masking-shielded light-emitting element is immersed in a solution of the acrylic-modified polyfluorene oxide resin in an organic solvent. In this manner, the acrylic modified polyoxynoxy resin is applied to the portion of the light-emitting member on which the masking tape is not adhered (the outer hemispherical surface and the annular bottom surface of the hemispherical cover-shaped light-emitting member) as the adhesion promoting material. .
之後，含有過量氨水並具有35g/L硝酸銀濃度的硝酸銀氨水溶液、具有20g/L濃度的氫氧化鈉水溶液、和具有15g/L濃度的葡萄糖水溶液各製得1L的量。這三種水溶液混在一起以製備用於銀鏡反應之溶液。已經以遮蔽帶遮蔽並經黏著增進材料塗覆的發光部件浸在用於銀鏡反應的溶液中，藉由在發光部件的外半球表面和圓環 形底表面上的銀鏡反應，在其上形成均勻的銀鏡膜。藉此得到的銀鏡膜進行鍍銅處理，此為製鏡工業已知者，之後施用背漆。之後，撕除遮蔽帶，於30℃乾燥24小時，得到具有反射層的波長轉換部件。 Thereafter, an aqueous solution of silver nitrate containing a large amount of ammonia water and having a concentration of silver nitrate of 35 g/L, an aqueous sodium hydroxide solution having a concentration of 20 g/L, and an aqueous glucose solution having a concentration of 15 g/L were each obtained in an amount of 1 L. These three aqueous solutions were mixed together to prepare a solution for the silver mirror reaction. A light-emitting member that has been shielded by a masking tape and coated with an adhesion promoting material is immersed in a solution for a silver mirror reaction, by the outer hemispherical surface and the ring of the light-emitting member A silver mirror reaction on the surface of the bottom surface forms a uniform silver mirror film thereon. The silver mirror film thus obtained is subjected to a copper plating treatment, which is known to the mirror industry, and then a back paint is applied. Thereafter, the masking tape was peeled off and dried at 30 ° C for 24 hours to obtain a wavelength conversion member having a reflective layer.
當以具有460nm的中央波長之藍光LED發射的光照射波長轉換部件的內半球表面側時，僅自波長轉換部件的內半球表面得到強烈白光。 When the light emitted from the blue LED having a central wavelength of 460 nm is irradiated to the inner hemispherical surface side of the wavelength converting member, intense white light is obtained only from the inner hemispherical surface of the wavelength converting member.
之後，使用波長轉換部件和發光二極體，製造遠程磷光體型發光裝置。五個具有450nm至465nm的中央波長的藍光LED(輸出：2W)徑向排列在透明樹脂盤上，以得到光源。在覆蓋光源的方式中，放置半球蓋形波長轉換部件，使得波長轉換部件的中央軸與光源的中心重合且自光源發射的藍光照射在波長轉換部件的內半圓全表面。 Thereafter, a remote phosphor type light-emitting device was fabricated using the wavelength conversion member and the light-emitting diode. Five blue LEDs (output: 2 W) having a central wavelength of 450 nm to 465 nm were radially arranged on a transparent resin disk to obtain a light source. In the manner of covering the light source, the hemispherical cap-shaped wavelength converting member is placed such that the central axis of the wavelength converting member coincides with the center of the light source and the blue light emitted from the light source is irradiated onto the entire inner surface of the inner semicircle of the wavelength converting member.
開啟發光裝置的藍光LED時，觀察到僅來自波長轉換部件的內半球表面的白光。用於此發光裝置，測得在自波長轉換部件的內半球表面上端向下2.5米的距離處的照度約550lx。 When the blue LED of the light-emitting device was turned on, white light from only the inner hemispherical surface of the wavelength conversion member was observed. For this illuminating device, the illuminance at a distance of 2.5 m downward from the upper end of the inner hemispherical surface of the wavelength converting member was measured to be about 550 lx.
以與實例1相同的方式進行至壓模的步驟，藉此僅製得未施以反射層的發光部件。具有460nm的波長的藍光LED發射的光照射發光部件的內半球表面。雖得到白光，觀察發現此白光不僅來自發光部件的內半球表 面，而是亦來自外半球表面和圓環形底表面。此外，自發光部件的內半球表面發射的光比實例1中者來得弱。 The step of press molding was carried out in the same manner as in Example 1, whereby only the light-emitting members to which the reflective layer was not applied were produced. Light emitted by a blue LED having a wavelength of 460 nm illuminates the inner hemispherical surface of the light-emitting component. Although white light is obtained, it is observed that this white light is not only from the inner hemisphere of the light-emitting part. The face, but also from the outer hemisphere surface and the toroidal bottom surface. Further, the light emitted from the inner hemispherical surface of the self-illuminating member was weaker than that of the example 1.
使用此發光部件，以與實例1相同的方式製造發光裝置。開啟藍光LED時，觀察到白光均勻地來自發光部件的內半球表面、外半球表面和圓環形底表面。用於此發光裝置，測得在自波長轉換部件的內半球表面上端向下2.5米的距離處的照度約380lx。 Using this light-emitting member, a light-emitting device was manufactured in the same manner as in Example 1. When the blue LED is turned on, white light is uniformly observed from the inner hemispherical surface, the outer hemispherical surface, and the toroidal bottom surface of the light-emitting member. For this illuminating device, the illuminance at a distance of 2.5 m downward from the upper end of the inner hemispherical surface of the wavelength converting member was measured to be about 380 lx.
以與實例1相同的方式進行至壓模的步驟。之後，半球蓋形發光部件的內半球表面完全以遮蔽帶遮蔽，反之，外半球表面以遮蔽帶以柵圖案遮蔽。此外，如同實例1，發光部件之未以遮蔽帶遮蔽的部分(半球蓋形發光部件的外半球表面的一部分和圓環形底表面)經丙烯酸系改質的聚矽氧樹脂塗覆，以得到具有反射層的波長轉換部件。 The step of press molding was carried out in the same manner as in Example 1. Thereafter, the inner hemisphere surface of the hemispherical cover-shaped light-emitting member is completely shielded by the masking tape, and conversely, the outer hemisphere surface is shielded by the masking pattern in the grid pattern. Further, as in Example 1, the portion of the light-emitting member that is not shielded by the masking tape (a portion of the outer hemispherical surface of the hemispherical-shaped light-emitting member and the annular bottom surface) is coated with an acrylic-modified polyoxyxene resin to obtain A wavelength conversion component having a reflective layer.
以具有460nm的中央波長之藍光LED發射的光照射波長轉換部件的內半球表面側。結果，自波長轉換部件的內半球表面和外半球表面二者得到白光。測定藉此得到的白光的色度。來自內半球表面的白光在x,y色度座標上的x值為0.3533和y值為0.3537。來自外半球表面的白光的x值為0.3752和y值為0.3501。因此，相較於在內側上的白光，在外側上的白光為較暖色。 Light emitted from a blue LED having a central wavelength of 460 nm is irradiated to the inner hemispherical surface side of the wavelength conversion member. As a result, white light is obtained from both the inner hemispherical surface and the outer hemispherical surface of the wavelength converting member. The chromaticity of the white light thus obtained was measured. The white light from the inner hemisphere surface has an x value of 0.3533 and a y value of 0.3537 on the x, y chromaticity coordinates. The white light from the outer hemisphere surface has an x value of 0.3752 and a y value of 0.3501. Therefore, the white light on the outer side is a warmer color than the white light on the inner side.
之後，使用此波長轉換部件和發光二極體， 以與實例1相同的方式製造遠程磷光體型發光裝置。 After that, using this wavelength conversion component and the light emitting diode, A remote phosphor type light-emitting device was fabricated in the same manner as in Example 1.
開啟發光裝置的藍光LED時，觀察到僅來自波長轉換部件的內半球表面的白光。用於此發光裝置，測得在自波長轉換部件的內半球表面上端向下2.5米的距離處的照度約430lx。此外，在此發光裝置中，波長轉換部件的外半球表面的一部分之上未施以反射層。因此，亦觀察到來自外半球表面的白光。 When the blue LED of the light-emitting device was turned on, white light from only the inner hemispherical surface of the wavelength conversion member was observed. For this illuminating device, the illuminance at a distance of 2.5 m downward from the upper end of the inner hemispherical surface of the wavelength converting member was measured to be about 430 lx. Further, in this light-emitting device, a reflection layer is not applied to a part of the outer hemispherical surface of the wavelength conversion member. Therefore, white light from the surface of the outer hemisphere was also observed.
因此，藉由改變發光層中的磷光體的種類或其層組態，和/或改變形成反射層的部分、區域或其形狀，可適當地設定各光發射方向的照度和色度。 Therefore, the illuminance and chromaticity of each light emission direction can be appropriately set by changing the kind of the phosphor in the light-emitting layer or its layer configuration, and/or changing the portion, the region or the shape in which the reflective layer is formed.
1‧‧‧遠程磷光體型發光裝置 1‧‧‧Remote phosphor type illuminating device
11‧‧‧波長轉換部件 11‧‧‧wavelength conversion components
12‧‧‧發光部件 12‧‧‧Lighting parts
13‧‧‧反射層 13‧‧‧reflective layer
21‧‧‧發光二極體 21‧‧‧Lighting diode
22‧‧‧基板 22‧‧‧Substrate
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| WO2014068804A1 (en) * | 2012-10-31 | 2014-05-08 | パナソニック株式会社 | Light emitting apparatus and method for manufacturing same |
| US9969932B2 (en) * | 2013-03-01 | 2018-05-15 | Philips Lighting Holding B.V. | Class of green/yellow emitting phosphors based on benzoxanthene derivatives for LED lighting |
| JP6025144B2 (en) * | 2013-03-27 | 2016-11-16 | シチズン時計株式会社 | Light emitting device |
-
2014
- 2014-05-22 JP JP2014106312A patent/JP6476592B2/en not_active Expired - Fee Related
-
2015
- 2015-05-19 TW TW104115884A patent/TW201610355A/en unknown
- 2015-05-21 EP EP15168678.9A patent/EP2947382A1/en not_active Withdrawn
- 2015-05-21 KR KR1020150070756A patent/KR20150135122A/en unknown
- 2015-05-21 US US14/718,238 patent/US20150338034A1/en not_active Abandoned
- 2015-05-22 CN CN201510264069.XA patent/CN105098036A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP2947382A1 (en) | 2015-11-25 |
| US20150338034A1 (en) | 2015-11-26 |
| CN105098036A (en) | 2015-11-25 |
| JP2015222768A (en) | 2015-12-10 |
| KR20150135122A (en) | 2015-12-02 |
| JP6476592B2 (en) | 2019-03-06 |
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